Fedora 16 changes the startup sequence and grub2 configuration skills

 

This is an example of Windows Startup by default:

 

 

1. First find Windows menuentry.

 

# Cat/boot/grub2/grub. cfg | grep Windows

 

 

Result:

 

Menuentry "Windows 7 (loader) (on/dev/sda1)" -- class windows -- class OS {

 

2. Set Windows as the default startup Item (here you can only use the content in the double quotation marks "" or single quotation marks "in the Command output above)

 

 

# Grub2-set-default "Windows 7 (loader) (on/dev/sda1 )"

 

 

3. Verify the default startup Item

 

 

# Grub2-editenv list

 

Output:

 

Saved_entry = Windows 7 (loader) (on/dev/sda1)

 

 

4. Generate and update grub. cfg (optional)

 

 

 

The following command uses/etc/grub. the automatic configuration script under d and the variables defined in/etc/default/grub automatically generate the GRUB2 configuration file (including the kernel under/boot), and-o specifies the output file, /boot/grub2/grub. cfg is the default configuration file. If it is a multi-system, it will automatically find them and add them to the Startup Menu list.

 

 

 

# Grub2-mkconfig-o/boot/grub2/grub. cfg

 

 

Timeout and background images can be configured in/etc/default/grub.

For example:

 

GRUB_TIMEOUT = 5

GRUB_DISTRIBUTOR = "Fedora"

GRUB_DEFAULT = saved

GRUB_CMDLINE_LINUX = "rd. md = 0 rd. lvm = 0 rd. dm = 0 KEYTABLE = us quiet SYSFONT = latarcyrheb-sun16 rhgb rd. luks = 0 LANG = en_US.UTF-8"

 

GRUB_BACKGROUND =/boot/grub2/background.png

 

GRUB_TERMINAL_OUTPUT = gfxterm

GRUB_THEME =/boot/grub2/mytheme/theme.txt

 

 

Note: The following command sets Fedora as the default startup Item:

 

 

 

# Cat/boot/grub2/grub. cfg | grep Fedora

 

 

Result:

 

Menuentry 'ora ora Linux, with Linux 3.1.2-1. fc16.i686. pae' -- class Fedora -- class OS {

 

Menuentry 'ora ora Linux, with Linux 3.1.1-1. fc16.i686. pae' -- class Fedora -- class OS {

Menuentry 'ora ora Linux, with Linux 3.1.0-7. fc16.i686. pae' -- class Fedora -- class OS {

 

# Grub2-set-default "Fedora Linux, with Linux 3.1.2-1. fc16.i686. PAE"

 

# Grub2-editenv list

 

# Grub2-mkconfig-o/boot/grub2/grub. cfg

 

From A Curious Programmer